Inking apparatus for printing-presses



( No Model.) 3 Sheets-Sheet 1. W. SGOTT. INKING APPARATUS FOR PRINTING PRESSES. No. 430,889.

Patented June 24, 1890.

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(No Model.) 3 Sheets-Sheet 2.'

W. SCOTT. INKING APPARATUS FOR PRINTING PRESSES. No. 430,889. Patented June 24, 1890.

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(No Model.) 3 Sheets-Sl1eet 3.

W. SCOTT. A INKING APPARATUS FOR PRINTING PRESSESL No. 430,889. Patented June 24, 1890.

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UNITED STATES PATENT OFFICE.

WALTER SCOTT, OF PLAINFIELD, NENV JERSEY.

INKING APPARATUS FOR PRINTING-PRESSES.

SPECIFICATION forming part of Letters Patent No. 430,889, dated June 24, 1890. Application filed January 10, 1890. Serial Il'o. 336,505. (No model.)

To all whom it may concern:

Be it known that I, WALTER SCOTT, a citizen of the United States, residing at Plainfield, in the county of Union and State of New Jersey, have invented an Improvement in Inking Apparatus for Printing-Presses, of which the following is a specification.

This invention is especially available in connection with printing-presses having a flat reciprocating bed adapted to the reception of two type or printing forms. Presses of this character are usually provided with two impression-cylinders and an impression is taken from one of the forms as the bed moves in one direction and from the other form as the bed moves in the opposite direction. These presses occupy considerable space, and it is advantageous to place the forms upon the type-bed as near together as possible for shortening such bed; but when this is done difficulty has heretofore been experienced in inking both forms ma proper manner and with uniformity, because the form is liable to receive an extra quantity of ink if the rollers remain in contact with such form during the time when the movement of the bed is stopped, or nearly so, and the direction of reciprocation changed, and, in addition to this, Where the forms lie comparatively close together upon the type-bed the adjacent portions of such forms sometimes receive an extra supply of ink by passing beneath the inking-rolls especially adapted to inking the other form, and in consequence of these con ditions the impressions are heavier upon the forms near the edges than upon the rest of the sheet, and with fine engravings and electrotype work this is especially objectionable.

By my improvements I am enabled to render the inking operations uniform, and I also provide for adjusting the composition inking rollers with great accuracy and for giving motion to such rollers with simplicity and for simultaneously distributing the ink with uniformity.

In the drawings, Figure 1 is a general elevation illustrating portions of the press with my improvements thereon. Fig. 2 is an elevation in larger size of a portion of the frame and the device connected with the two pairs of inking-rolls; and Fig. 3 is a plan view, partially in section, at the lines; as, and show ing the mechanism at one end of the two pairs of inking-rolls.

lwo impression-cylinders are represented at A and A, and B shows the form-bed, which is to be of any ordinary character and reciprocated in any usual manner, and a portion of the main frame of the machine is represented at O, and I have shown two forms. The form B may be designated as the first form and the form B as the second form; and I have shown composition rollers DD for inking the first form and composition rollers E E E E for inking the second form, and it will be observed that the ink for'the composition rollers D D is represented as being supplied from the fountain F by the ductor G to the intermediate distributers H and I and the vibrator K, which latter is immediately above and in contact with the composition rollers D and D. These parts areillustrative and may be of any desired character, as the means for supplying the ink to the rollers D D do not form a necessary element of this invention.

The composition rollers E E E E are preferably inked by a table upon the bed B as such table is reciprocated beneath such composition rollers, and ink is to be supplied to this table and worked upon the same in any desired manner.

ingink to such composition rollers EE" E E I have represented a vibrator K above the rolls E E and another above the rolls E and E and the vibrators are to be actuated in a similar manner for each pair of the composition rolls.

The bearings and supports for the respective pairs of composition rolls are similar. I will therefore describe these bearings with reference to the pair of composition rolls E E. The arbors or shafts 2 and 3 of the respective composition rollers are of ordinary character, and these are received into the eyes or bearings L, each of which is formed with a circular stud 4, passing up into the clamp-socket N or N, and such clamp-sockets are tubular and split at one side, at which place the clamp-screw 5 is applied, and there is an adj usting-screw O, the head 6 of which is received into a slot or mortise between the ICU upper end of the clamp-socket and a projecting head or finger 7, so that this screw 0 occupies a fixed position; but it is free to be rotated, and the screw portion thereof passes down into a threaded hole in the circular-stud 4:, so that by this screw 0 the stud t can be raised or lowered and the composition roller correspondingly adjusted, and the parts are firmly held in their position by turning the clamping-screw 5. At one side of each clamping-socket N or N is a circular projection having a central hole for the bolt P, which bolt forms ahinge-pin upon which the clamping-sockets can be swung, and this bolt P is supported by the bracket Q, that is connected with the main frame 0 of the machine. This bracket Q is. of such a shape that the lower or base portion passes back against the surface of the frame C, and it is perforated for the reception of a guide-pin Q and a standing bolt 10, the back end of which is screwed firmly into the frame 0, and within the bracket Q is a nut 11, acted upon by the T-head or handle 12, and this nut is held in position by across-pin passing into a peripheral groove, so that by turning the T-head 12 and nut the bracket Q and the parts carried by it can be adjusted or clamped firmly against the side of the frame 0, and by unscrewing the handle 12 and nut the bracket and parts carried by it can be disconnected and removed entirelyfrom the frame, thereby liberating the composition rollers and allowing for their removal or replace ment, and upon the lower portions of this bracket Q there are projectinglugs or flanges 13, throughwhich pass set-screws with jamnuts, the points of which set-screws are adjacent to the eyes or bearings L and are at an inclination, so that by adjusting these screws 14 the clamping-sockets N N can be swung upon the bolt P into any desired position, and thereby raised or lowered from the forms B B The vibrator K occupies a central position between the two composition rollers, and the pressure of such composition rollers against the vibrator will be varied by the adjusting-screws 0, before mentioned, and in consequence of the bolt P being axially in line with the arbor of the vibrator K the pressure of the composition rollers against the vibrator will not' be varied by the adj ustment effected by the set-screws 14, and the adj ustmentis not disturbed by removing the bracket for removing and cleaning the rolls. It is preferable to give a positive motion to the vibrator K from the reciprocating bed B, in order that the composition rolls may be revolved first in one direction and then in the other atthe same rate of surface speed as the forms, to effect which object a rack S is provided near one edge of the bed, and there is a pinion S upon a screw-stud 15, extending inwardly from the frame 0, and this screwstud 15 being a fixture and the pinion S being rotated around the same by the rack as the bed reciprocates the pinion is screwed along endwise upon its stud at the same time that it is revolved. I therefore make the rack-teeth longer than the teeth upon the pinion, in order that the pinion-teeth may remain properly in gear with the rack upon the bed when the pinion is nearer to or farther from the frame 0, and upon the shaft or arbor 16 of the vibrator K there is a pinion 17, the pitch-line of which corresponds in diameter to the vibrator, so that the surface of the vibrator will move at the same speed as the bed, and there are flanges 18 at the ends of the pinion-teeth, which flanges come at opposite ends of the teeth upon the pinion S. Hence as this pinion S is screwed along endwise of its stud 15 as it is revolved the flanges 18 give an endwise movement to the shaft 16 and vibrator K at the same time that it is re volved, as aforesaid; hence the ink is spread laterally upon the surface of the composition rolls at the same time that said rolls are revolved at the same surface speed as the respective forms. One flange may be used instead of two if the pinion S is grooved for the reception of such flange.

As before mentioned, in presses of this kind some portions of the forms are liable to be inked to a greater extent than other portions of such forms, and this is especially the case when the bed B reciprocates to such an extent that the advancing end of the first form B passes more or less beneath the rolls E E E" E and that the advancing end of the second form B passes under the rolls D or D. In order therefore to cause the rolls D D to ink the first form B only and the rolls E E E E to ink the second form only, I provide for raising one or more of the composition rolls at the time the form for which they are not intended may pass partially under such composition roller or rollers, and with this object in view I make use of lifters T to act beneath the toe-pieces 20 upon theeyes or bearings L. These lifters T are upon short shafts supported on the frame of the machine and provided with arms T, adjacent to cams T upon the sides of the bed B, and these cams are placed, in such positions that they act against the arms T at the proper time to raise the composition rollers by the lifters T before the form that is not to be inked by them passes beneath such composition rollers and to hold up such composition rollers during the time that the form is beneath them, and it is to be understood that the lifters and toe pieces are similarly applied'at opposite sides of the machine to the composition roller or rollers that require to be lifted. I have shown lifters to the rolls E E and D; but they may be provided for use with any or all of the compositionrollers, and it is to be understood that the lifters, acting against the toes, swing the clamp-sockets and parts connected with them upon the pivot-bolts P, and that when the cams T pass from beneath the arms T the parts resume their normal position with the bearings L resting against the set-screws 14. It is pref- ICC IIO

erable to make use of rollers upon the ends of the arms T, as represented, to lessen the friction and spring 22 upon the lifters T with their ends pressing above the toes to aid in moving the toes and bearings downwardly when the cams pass from beneath the arms, and usually it will be necessary to make use of two sets of cams, one at each side of the bed, as shown in the drawings, one cam beiug nearer to the edge of the bed than the other, and the respective arms are in correspondin g positions, so that the cams intended to raise the rollers E IE will not act upon the rollers D or D and the reverse. It is also preferable to slot the rollers T on arcs of circles from the shafts upon which they move, and to provide screws and nuts 24., by which the lifters can be clamped to short crank-arms 23, firmly fastened upon the short shafts that pass through the frames, the lifters T being loose on said shafts, so that the parts can be adjusted to raise the composition rolls the proper distance from the forms.

Usually lifting devices similar to those shown in my patent, No. 338,366, dated March 23, 1886, are made use of for raising the rollers off the forms when the press is not in use or is being run without paper for spreading the ink and rendering it uniform before the printing is commenced.

In presses of this character it is preferable to feed the paper so that it passes down upon the impression-cylinder A when such cylinder is moving in the direction of the arrow, Fig. 1, and the sheet of paper is printed upon the second form 13 when the bed is moving in one direction or to the left in Fig. 1, and the paper passes down upon the cylinder A in the directionindicated by thearrow, and isprinted upon the first form 13' when the bed is going in the opposite direction or to the right, Fig. 1. The means for supplying the sheet of paper or transferring the same from one impression-cylinder to the other do not form part of the present invention.

It is not always necessary to give to the vibrator an endwise movement; hence when the flange 18 is omitted the roller K simply acts as a distributer.

It will be apparent that any suitable devices may intervene between the cams in the typebed and the pivoted bearings for the inkingroll, or the cams may be placed so as to act directly upon the pivoted bearings when such pivoted bearings are within the frame and the cams sufficiently high on the edges of the bed to reach the lower ends of the pivoted bearings, which lower ends of such pivoted bearings may be extended downwardly as far as necessary, as seen .by dotted lines at L Fig. 2.

It will be evident that the pinion S being the only gear that intervenes between the rack S and the pinion 17 of the vibrator the endwise movement is given directly from the screw and pinion S to the vibrator without the numerous gears heretofore provided, and.

* the ink-rolls are more reliably rotated without loss of motion at the time the type-bed commences its reverse movement.

I claim as my invention- 1. The combination, with the composition rollers and the intermediate roller, of the eyes or bearings L for the ends of the composition- :roller shafts, the clamp-sockets for the recep- 'tion of the studs upon the bearings, the adjusting-screws O for regulating the position of the studs in the sockets, and the lateral projections and the bolt passing through such projections and forming hinges upon which the journals of the composition rollers can be swung, substantially as set forth.

2. The clamp-sockets and the bolt P, upon which they are pivoted, the eyes or bearings for the composition rollers, and intermediate adjustable connections, in combination with the roller between and in contact with the composition rolls and the adjusting-screws to regulate the positions of the composition rolls as they swing by gravity toward the typeforms, substantially as set forth.

3. The removable brackets Q and the bolt and nut by which they are connected to the frame of the machine or removable therefrom, in combination with the pivot-bolt supported by such bracket, the eyes or bearings for the composition rolls, the connections between the same and the pivot-bolt, and the adj usting-screws supported by such brackets, whereby the bracket and the parts carried by it can be removed to give access to the composition rolls without changing the adjustments of the parts, substantially as set forth.

4. The combination, with the bed and the composition rolls, of a vibrator in contact with the composition rolls, a rack upon the upper surface of the bed, a stationary screwstud projecting from the inner surface of the frame and above the rack, a pinion upon such screw-stud and in direct contact with the rack, a pinion on the axis of the vibrator, and a flange upon the same acted upon by the pinion to the rack, whereby the vibrator is rotated and moved endwise by the direct action of the screw and pinion, substantially as set forth.

5. The combination, with the composition roll and the pivoted bearings for the same, of lifters acting to swing the pivoted bearings, the reciprocating type-bed and cams upon the same, and arms acted upon by the cams to move the lifters, substantially as set forth.

6. The combination, with the composition rolls, of pivoted bearings having toes, the lifters acting upon the toes, springs for pressing the toes toward the lifters, a reciprocating type-bed, cams affixed to such type-bed, and arms acted upon by the cams for moving the lifters, substantially as set forth.

7. The combination, with the composition roller, of eyes or bearings for the shaft of thesame, circular studs upon the bearings, clamping-sockets for the reception of the studs, ad

10 acted upon by the cams, and adjusting mech 'anism between the arms and the lifters to vary the distance the composition rollers are moved, substantially as set forth.

Signed by me this 31st day of December, 1889.

WVALTER SCOTT.

Witnesses:

GEO. T. PINOKNEY, HAROLD SERRELL. 

